2023ApJ...950..126K

Query : 2023ApJ...950..126K

2023ApJ...950..126K - Astrophys. J., 950, 126 (2023/June-3)

Blanco DECam Bulge Survey (BDBS). VI. Extinction Maps Toward Southern Galactic Bulge Globular Clusters.

KADER J.A., PILACHOWSKI C.A., JOHNSON C.I., RICH R.M., YOUNG M.D., SIMION I.T., CLARKSON W.I., MICHAEL S., KUNDER A., VIVAS A.K., KOCH-HANSEN A.J. and MARCHETTI T.

Abstract (from CDS):

We present wide-field, high resolution maps of the color excess for 14 globular clusters toward the Southern Galactic bulge. The maps were derived using Gaia EDR3 astrometry and stellar photometry from the Blanco DECam Bulge Survey, which is a deep, wide-field ugrizY photometric survey of the southern Galactic bulge. Comparisons with WISE 12 μm images of thermal continuum emission demonstrate that the maps presented here trace interstellar extinction by dust down to 5″ scales. We use the reddening-corrected photometry of proper motion-selected cluster stars to build color-magnitude diagrams for the target globular clusters, which show residual broadening in excess of that expected from the photometric errors alone. This residual broadening is likely to be driven by star-to-star elemental abundance variations.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Globular star clusters - Broad band photometry - Interstellar dust extinction - Red giant branch - Galactic bulge

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 [DB2002b] G352.89-5.06 DNe 17 48.8 -37 38           ~ 3 0
5 LDN 305 DNe 17 49.9 -16 16           ~ 3 0
6 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
7 NGC 6453 GlC 17 50 51.77 -34 35 55.1   10.49       ~ 189 0
8 Barnard 283 DNe 17 51 -33.9           ~ 2 0
9 NAME Baade Window reg 18 03.5 -30 01           ~ 643 3
10 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 561 0
11 Barnard 298 DNe 18 05.2 -30 05           ~ 2 0
12 LDN 41 DNe 18 05.2 -30 00           ~ 3 0
13 DCld 005.9-01.8 DNe 18 06.1 -24 46           ~ 2 0
14 NGC 6540 GlC 18 06 08.60 -27 45 55.0           ~ 145 0
15 LDN 116 DNe 18 06.5 -27 30           ~ 4 0
16 TGU H77 P8 DNe 18 06.8 -25 17           ~ 2 0
17 NGC 6544 GlC 18 07 20.58 -24 59 50.4   11.36 9.90     ~ 332 0
18 DOBASHI 0236 DNe 18 08 14.5 -26 16 33           ~ 2 1
19 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
20 LDN 176 DNe 18 10.1 -25 49           ~ 3 0
21 NGC 6569 GlC 18 13 38.88 -31 49 35.2   10.78 9.47     ~ 276 0
22 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
23 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
24 LDN 236 DNe 18 26.1 -25 18           ~ 3 0
25 LDN 269 DNe 18 29.5 -23 48           ~ 3 0
26 NGC 6638 GlC 18 30 56.25 -25 29 47.1   10.81 9.68     ~ 258 0
27 LDN 245 DNe 18 31.1 -25 28           ~ 4 0
28 M 69 GlC 18 31 23.10 -32 20 53.1           ~ 492 0
29 NGC 6642 GlC 18 31 54.23 -23 28 34.1   11.30 10.24     ~ 240 0
30 NGC 6652 GlC 18 35 45.63 -32 59 26.6           ~ 474 0
31 LDN 284 DNe 18 36.0 -23 27           ~ 3 0
32 LDN 263 DNe 18 36.1 -24 57           ~ 3 0
33 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
34 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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